<template>
    <div>
       <!-- 面包屑导览 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图 -->
        <el-card class="box-card">
            <!-- 搜索与添加 -->
            <el-row :gutter="20">
                <el-col :span="11">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                       <el-button slot="append" icon="el-icon-search" @click="getUserList" ></el-button>
                    </el-input>
               </el-col>
               <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
               </el-col>
            </el-row>

            <!-- 用户列表区域 -->
            <el-table :data="userlist" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态">
                    <!-- 作用域插槽 -->
                    <template slot-scope="scope">
                        <el-switch
                            v-model="scope.row.mg_state" @change="userStateChange(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <!-- 作用域插槽 -->
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色按钮-->
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 3, 8]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
        </el-card>

        <!-- 添加用户对话框 -->
        <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%"
            @close="addDialogCloses">
            <!-- 内容读取 -->
            <el-form :model="addForm"
                :rules="addFormRules"
                ref="addFormRef"
                label-width="70px">
                <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部按钮 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户对话框 -->
        <el-dialog
            title="修改用户"
            :visible.sync="editDialogVisible"
            width="50%"
            @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色对话框-->
        <el-dialog
  title="提示"
  :visible.sync="setRightDialogVisible"
  width="50%" @close="setRoleDialogClosed">
  <div>
    <p>当前用户:{{userInfo.username}}</p>
    <p>当前角色:{{userInfo.role_name}}</p>
    <p>分配新角色:
      <el-select v-model="selectedRoleId" placeholder="请选择">
        <el-option
          v-for="item in rolesList"
          :key="item.id"
          :label="item.roleName"
          :value="item.id">
        </el-option>
      </el-select>
    </p>

  </div>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="seveRoleInfo">确 定</el-button>
  </span>
</el-dialog>
    </div>
</template>

<script>
export default {
  data () {
    // 验证邮箱规则
    var checkEmail = (rule, value, callback) => {
      // 验证邮箱正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法规则'))
    }
    // 验证手机号规则
    var checkMobile = (rule, value, callback) => {
      // 验证手机号正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法手机号'))
    }
    return {
      // 获取用户列表的参数对线
      queryInfo: {
        query: '',
        // 当前页数
        pagenum: 1,
        // 每页显示多少条数据
        pagesize: 2
      },
      userlist: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加 表单
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单调用规则
      addFormRules: {
        username: [{ required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名长度在3-10个字之间',
            trigger: 'blur'
          }
        ],
        password: [{ required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '密码长度在6-15个字之间',
            trigger: 'blur'
          }],
        email: [{ required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }],
        mobile: [{ required: true, message: '请输入电话号码', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }]
      },
      // 修改用户对话框显示隐藏
      editDialogVisible: false,
      // 查询到的用户对象
      editForm: {},
      // 修改表单验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配对话角色
      setRightDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色数据列表
      rolesList: [],
      // 已选中的分配角色值
      selectedRoleId: ''
    }
  },
  created () {
    // 数据列表
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('数据获取失败')
      this.userlist = res.data.users
      this.total = res.data.total
      console.log(res)
    },
    // 监听 handleSizeChange改变事件
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听 switch 开关状态
    async userStateChange (userinfo) {
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('修改失败')
      }
      this.$message.success('成功修改')
    },
    // 监听 添加用户对话框关闭事件
    addDialogCloses () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return this.$message.error('添加出错')
        // 可以添加 用户网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }
        // 添加用户成功就返回
        this.$message.success('添加用户成功')
        // 添加点击后 隐藏 添加列表
        this.addDialogVisible = false
        // 添加成功后 重新显示 列表
        this.getUserList()
      })
    },
    // 用户编辑修改对话框
    async showEditDialog (id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听用户修改对话框关闭事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交 validate函数验证
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 发起修改用户信息的数据请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        // 判断请求是否成功
        if (res.meta.status !== 200) {
          return this.$message.error('更新失败')
        }

        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据表
        this.getUserList()
        // 提示修改成功
        this.$message.success('更新成功')
      })
    },
    // 根据id删除用户的信息
    async removeUserById (id) {
      // 弹窗询问是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除 返回值为字符串 confirm
      // 如果用户取消删除 则返回字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除')
      }
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败')
      }
      this.$message.success('删除成功')
      this.getUserList()
    },
    // 分配角色对话框
    async setRole (userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前获取所有列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败')
      }
      this.rolesList = res.data
      this.setRightDialogVisible = true
    },
    // 点击按钮分配角色
    async seveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择分配的角色')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId
      })
      if (res.meta.status !== 200) {
        return this.$message.error('更新用户失败')
      }
      this.$message.success('更新成功')
      this.getUserList()
      this.setRightDialogVisible = false
    },
    // 分配角色对话框关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>

</style>
